Celluloid perpetual daily-balance leaf.



No. 763,091. PATENTED JUNE 21, 1904.-

W. E'. DODSWORTH.

GELLULOIDA PERPETUAL DAILY BALANCE LEAF.

APPLIOATION FILED APR. 5, 1904.

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Nirnn STATES Patented June 21, 1904.

WALTER FEW DODSWTOR'TI, OF LEAVENWIORTH, KANSAS.

CELLULOID PERPETUAL. DAILY-BALANCE LEAF.

SPECIFICATION forming part of Letters Patent No. 763,091, dated June 21,1904.

Application filed April 5, 1904.

enable others skilled in the art to which it appertains to m'ake and usethe same.

I have produced a blank-book of celluloid leaves as three-ply entitiesdesigned for use by bankers and others for the purpose of figuring dailybalances that are not necessary to be kept as records, such as a list ofnames and figures that can be easily rubbed out without wearing orinjuring the celluloid surface/and new names or figures written in thesame line or column. In ink or pencil the writingl can easily be rubbedout, and for this purpose I have produced a celluloid leaf comprisingthree separate and independent sheets bound together as an entity, thetwo outside sheets of transparent celluloid fianking a mediate sheet ofledger-paperruled on both sides and in which the lines appear as if madeon the celluloid sheets.

A composite or three-ply sheet made as an entity is provided with meanswhereby it may be attached lto a stub and by it bound in a book form.

rIhe following description read in connection with the accompanyingdrawings will enable any one skilled in the art to which my inventionrelates to understand my invention and to practice it in the form inwhich I prefer to employ it; but it will be understood that my inventionis not limited to the precelluloid leaves and their embodiment inbookform with ledger-leaves. Fig. 2 shows in transverse section acomposite or three-ply leaf comprising a ledger-leaf ruled on both rialNo, 201,751. (No model.)

sides and flanked on both sides with a transparent celluloid leaf andbinding for the threeply edges. Fig. 3 is a cross-section showing theembodiment of the invention in the mounting and binding of suchthree-ply leaves in book form. Fig. 4 shows the bound edge of one of thethree-ply leaves and one means, such as a connected stub, by which itmay be bound in book form. Fig. 5 shows the corner of one 'of thethree-ply leaves with the celluloid leaf turned up to expose the ledgerruled leaf.

The leaf is made of three sheets, each separate and independent, two ofwhich flank opposite sides of the third. The two flanking sheets l 1 areof thin transparent celluloid, and the mediate sheet 2 is of heavyledger or other paper ruled in any form desired on both sides. l preferto make the celluloid sheet with a slightly rough outer surface, as itrenders it better for takingA the writing and showing no wear in erasingthe writing, while theinner surface is comparatively smooth to lie closeupon the ruled ledger-surface, so that the ruling will appear as if madeupon the celluloid sheet, and along these lines the writing is made onthe celluloid surface. The

three sheets are of the same size and are bound together all aroundtheir edges first by pasting, preferably, a strip of binders cloth 3around the edges of one of the celluloidi'sheets, then folding the clothover the edges of the .three sheets and pasting it down on the edge ofthe sheet of celluloid. on the other side. This is for the purpose ofholding the sheets firmly together and to form a binding-envelop andfinish for their edges, this pasted envelop reinforced by a line ofstitching 4, the thread passing through both sheets of celluloid, theledger-sheet, and the laps of the cloth strip. As a means for bindingthe leaves so made up into book form I have shown a separate stub 5attached to each leaf, and this stub is preferably formed of a strip ofsuitable sti paper, and as a simple and convenient holder for this stubI utilize the cloth binding-strip to form a pocket 6, within which thestub is inclosed, and for this purpose the bindingstrip is extendedunpasted beyond the bound edge of the leaf. While the stub is wideenough to make a support for the leaf, it does not join the bound edgeof the leaf, but there is a space between the edges to form the hinge ofthe leaf, and along this hinge-forming space the stub-pasted strip issewed by the stitching 7, thereby forming the pocket for the stub, whilethe stitching along the line of the hinge gives a free turning of theleaf; but the stub should be of the same thickness as the threeply leafto make the binding at the back of the book even and to allow the bookwhen made up to open fiat. The covers, the back` and the three-plyleaves are bound into book form in any desired way.

Obviously the blank leaf comprising a ledger-sheet iianked on each sideby a transparent sheet of celluloid bound together as an entity may bemade and sold to the trade as a new article of manufacture for bankersuse as a daily balancing-sheet. The leaf with its hinge binding-stub isproduced complete for being made up with the bound book. A separatebinding-strip is preferably provided for the four edges of the leaf, andthe leaves may be secured together by their stubs before being bound inthe book. Vhen the leaves are made for use as` an article of trade', thestub and hinge forming part of the binding-strip are dispensed with.

I claimw l. As a new article of manufacture, a balance-leaf comprising aledger-sheet ruled on both sides, a sheet of transparent celluloidfianking each ruled ledger side and a strip of cloth inelosing the edgesof the three sheets pasted to both celluloid sheets and including thethree sheets all stitched together along the pasted sides of thebinding-strip.

2. A daily-balance blank-book the leaves whereof are each composed of aledger-sheet ruled on both sides, anda sheet of transparent celluloidflanking each ruled ledger side, and including a binding both pasted andstitched all round the three sheets to permanently inclose and securethe celluloid sheets, and means for binding the leaves to the cover.

3. In adaily-balanee blank-book, the com bination of a leaf comprising aledger-sheet ruled on both sides, a sheet of transparent celluloidflanking each ruled ledger side, a strip of cloth folded over andinclosing the edges of the three sheets pasted to both the celluloidsheets, and including the three sheets stitched together along thepasted sides of the bindingfstrip, the latter extended unpasted beyondthe bound edge of the leaf and forming a pocket parallel with the boundedge of the leaf, a stiff stub within the pocket, and a hinge formed bythe binding-strip between the edge of the stub and the bound edge of thebook, and a line of stitching uniting the unpasted sides of thepocket-forming strip along the line of the hinge.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

WALTER FEW DODSIVORTH.

Witnesses:

ADOLPH BEIGA, J. S. DoDswoRTH.

